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# Licensed to the Apache Software Foundation (ASF) under one
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# regarding copyright ownership.  The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License.  You may obtain a copy of the License at
# 
#   http://www.apache.org/licenses/LICENSE-2.0
# 
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args <- commandArgs(TRUE)
options(digits=22)

library("Matrix")

X = as.matrix(readMM(paste(args[1], "X.mtx", sep="")))

R = lower.tri(X, diag=as.logical(args[2]));
if( as.logical(args[3]) ) {
  R = R * X;
}

writeMM(as(R, "CsparseMatrix"), paste(args[4], "R", sep="")); 
